SU173171A1 - - Google Patents

Description

(21) 778260 / 22-03

(22) 05.14.62

(46) 05/15/87. Bul Number 18

(72) S.G.M.-R.Gadiev (53) 622.276 (088.8)

(56) US Patent No. R e 23381, M cl. 166-20, publ. 1951

(54) METHOD FOR PROCESSING PRODUCTIVE PLATE WELLS

(57) The invention relates to the field of oil and gas industry and allows increasing the filtration capacity of a producing formation of a well. A working agent is pumped into the well.

Claims (2)

use solvent. Then the solvent is forced into the reservoir with a simultaneous vibration effect. Vibration is accomplished by pulsating the injected solvent by pumping it through a vibrator. The solvent used is hydrochloric acid, unsaturated kerosene, and mixtures thereof. The amount of these components varies in the range of 15–20 m, and the exposure time is 20–30 min. As the amount of solvent injected increases, the flow rate of the well increases. 3 il. 1 The invention relates to the field of oil and gas industry, in particular to methods for treating a producing formation of a well. The aim of the invention is to increase the filtration capacity of the reservoir. FIG. Figure 1 shows the layout of equipment for implementing a method for treating a producing formation of a well; in fig. 2 - one of the variants of the downhole vibrator; in fig. 3 shows section A-A in FIG. 2. According to the invention, a solvent is pumped into the well, which is forced into the formation with simultaneous vibration effects. The exposure is carried out by pulsation of the solvent injected into the formation by pumping it through the vibrator. To implement the wellhead method, equipment including a collector 1 is used, which is connected with wellhead assemblies 2 from high-capacity units to which a downhole vibrator 5 is suspended on tubing pipes 3 with a shock absorber 4 (Crust 6 is formed in the bottomhole formation zone behind the cement ring 7). The rotator consists of a barrel 8, in the wall of which there are tangential gap left holes 9. A spool 10 is placed on the barrel, which can rotate on ball bearings. There are also side openings 11 in the spool, which are inclined in the opposite direction. The working fluid is supplied by powerful aggregates to the collector 1 to the wellhead fittings 2 and through the pump-compressed pressure pipes 3 to the downhole vibrator 5. After circulating in the well, the annulus is closed and pumped 7–10 m of agent, which is crushed; . 2 into the formation with a squeeze fluid. The liquid jet directed by the bore holes acts on oblique sections of the spool bore and creates the conditions necessary to bring it into rotational motion. The spool holes are designed in such a way that, with its uniform rotation, about half the time, the bore holes remain open. Therefore, the uniform movement of the fluid is converted into a pulsation. The fluid periodically moves with double speed, then. stops i Depending on the number of windows, their shape and the amount of fluid supplied, the pulsation frequency may be different, but it is always directly proportional to the flow rate of the fluid supplied. Solvents such as hydrochloric acid, unsaturated kerosene and their mixtures are used for the implementation of the method, the amount of which varies between 15-20 m and the exposure time is 2030 minutes. As the amount of solvent injected increases, the flow rate of the well increases. Claims of Invention A method of treating a producing formation of a well by pumping a working agent into the well and vibrating impact on it, i.e., in order to increase the filtration capacity of the producing layer, the solvent is pumped into the well as a working agent. forced into the reservoir with a simultaneous vibration effect, carried out by the pulsation of the injected solvent. // figure 1 fig.Z